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QuadReadLaneAt function

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Returns the specified source value from the lane identified by the lane ID within the current quad.

Syntax

<type> QuadReadLaneAt(
   <type> sourceValue,
   uint   quadLaneID  
);

Parameters

sourceValue

The requested type.

quadLaneID

The lane ID; this will be a value from 0 to 3.

Return value

The specified source value. The result of this function is uniform across the quad. If the source lane is inactive, the results are undefined.

Remarks

For more information on quads, refer to Overview of Shader Model 6.

This function is supported from shader model 6.0 only in pixel and compute shaders.

 

See also

Shader Model 6